libavutil: cast truncated values to uint32_t

programs using ffmpeg that are compiled with -Wshorten-64-to-32
gives a warning when using header files common.h and rational.h

cast 64-bit truncated values to (uint32_t) to avoid the warning
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavutil/common.h

@@ -175,7 +175,7 @@ static av_always_inline av_const int16_t av_clip_int16_c(int a)
  */
 static av_always_inline av_const int32_t av_clipl_int32_c(int64_t a)
 {
-    if ((a+0x80000000u) & ~UINT64_C(0xFFFFFFFF)) return (a>>63) ^ 0x7FFFFFFF;
+    if ((a+0x80000000u) & ~UINT64_C(0xFFFFFFFF)) return (int32_t)((a>>63) ^ 0x7FFFFFFF);
     else                                         return (int32_t)a;
 }
 
@@ -279,7 +279,7 @@ static av_always_inline av_const int av_popcount_c(uint32_t x)
  */
 static av_always_inline av_const int av_popcount64_c(uint64_t x)
 {
-    return av_popcount((uint32_t)x) + av_popcount(x >> 32);
+    return av_popcount((uint32_t)x) + av_popcount((uint32_t)(x >> 32));
 }
 
 #define MKTAG(a,b,c,d) ((a) | ((b) << 8) | ((c) << 16) | ((unsigned)(d) << 24))

libavutil/rational.h

@@ -55,7 +55,7 @@ typedef struct AVRational{
 static inline int av_cmp_q(AVRational a, AVRational b){
     const int64_t tmp= a.num * (int64_t)b.den - b.num * (int64_t)a.den;
 
-    if(tmp) return ((tmp ^ a.den ^ b.den)>>63)|1;
+    if(tmp) return (int)((tmp ^ a.den ^ b.den)>>63)|1;
     else if(b.den && a.den) return 0;
     else if(a.num && b.num) return (a.num>>31) - (b.num>>31);
     else                    return INT_MIN;